On Tue 03 Sep 2013 21:27, Doug Evans <[email protected]> writes: > 2) Is it possible to inherit, e.g., with goops, a smob? > IOW, can I extend a smob through inheritance? > Or must I store the smob in a class, and provide accessors? > [kinda like the "is a" vs "has a" relationship]
You can't really inherit from a SMOB in GOOPS. SMOB types have corresponding GOOPS classes, but in a practical sense they can only be used as specializers on methods; they aren't useful as constructors or superclasses. This is because GOOPS objects and SMOB objects have different representations. It's possible to do SMOB-like things in GOOPS but it is tricky and not well documented. Guile-GNOME does this; see http://git.savannah.gnu.org/cgit/guile-gnome.git/tree/glib/gnome/gobject/gtype.scm for more. Lately what I have been doing is just using the FFI, and setting finalizers on pointers as needed. Regards, Andy -- http://wingolog.org/
